[INFO] updating cached repository https://github.com/Dorfen/tu_rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c1ea69efeebcdf39900c91d2c8db3366273873c6
[INFO] checking Dorfen/tu_rust against master#0cbcb17d3306d6e22eafc2c05ce885db97d0189c for pr-68766
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDorfen%2Ftu_rust" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Dorfen/tu_rust on toolchain 0cbcb17d3306d6e22eafc2c05ce885db97d0189c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+0cbcb17d3306d6e22eafc2c05ce885db97d0189c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Dorfen/tu_rust
[INFO] finished tweaking git repo https://github.com/Dorfen/tu_rust
[INFO] tweaked toml for git repo https://github.com/Dorfen/tu_rust written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Dorfen/tu_rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+0cbcb17d3306d6e22eafc2c05ce885db97d0189c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+0cbcb17d3306d6e22eafc2c05ce885db97d0189c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 97d9c5c00087f79378d93095abeac8e148678679bfb75d8471f0e882ac48b8b9
[INFO] running `"docker" "start" "-a" "97d9c5c00087f79378d93095abeac8e148678679bfb75d8471f0e882ac48b8b9"`
[INFO] [stderr]     Checking rust_tu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `what_is_the_weather`
[INFO] [stderr]  --> src/ex2.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn what_is_the_weather(temp: u64) -> String
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_ascii`
[INFO] [stderr]  --> src/ex3.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn is_ascii(str: &String) -> bool
[INFO] [stderr]   |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PrettyStruct`
[INFO] [stderr]  --> src/ex4.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct PrettyStruct {
[INFO] [stderr]   |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/ex4.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn new(name: String, data: Vec<String>) -> PrettyStruct
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_index_val`
[INFO] [stderr]   --> src/ex4.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn get_index_val(&self, index: usize) -> String
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `add_all`
[INFO] [stderr]  --> src/ex1.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn add_all(a :u8, b :u8, c :u8) -> u8
[INFO] [stderr]   |    ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `what_is_the_weather`
[INFO] [stderr]  --> src/ex2.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn what_is_the_weather(temp: u64) -> String
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_ascii`
[INFO] [stderr]  --> src/ex3.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn is_ascii(str: &String) -> bool
[INFO] [stderr]   |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PrettyStruct`
[INFO] [stderr]  --> src/ex4.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct PrettyStruct {
[INFO] [stderr]   |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/ex4.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn new(name: String, data: Vec<String>) -> PrettyStruct
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_index_val`
[INFO] [stderr]   --> src/ex4.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn get_index_val(&self, index: usize) -> String
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `"docker" "inspect" "97d9c5c00087f79378d93095abeac8e148678679bfb75d8471f0e882ac48b8b9"`
[INFO] running `"docker" "rm" "-f" "97d9c5c00087f79378d93095abeac8e148678679bfb75d8471f0e882ac48b8b9"`
[INFO] [stdout] 97d9c5c00087f79378d93095abeac8e148678679bfb75d8471f0e882ac48b8b9